Improvement in washers for paper-pulp



UNITED v STATES PATENT OFFICE.

JAMES PIERCY, OF BLOOMFIELD, NEW JERSEY.

`,IMPROVEMENT IN WASHERS FOR PAPER-PULP.

Specilcation forming part of Letters Patent No. 34,214, dated January21, 1862.

To all whom it may concern,.-

Be it known that I, JAMES PIERCY, of the town of Bloomfield, in thecounty of Essex and State of New Jersey, have invented certainImprovements in Nashers for Paper-Pulp; and I do hereby declare thefollowing to be a full and exact description thereof, reference beinghad therein to the drawings which accompany this specification and makepart of the same.

The nature of m-y invention consists in a discharge of the water from anopen end in a washer through the side of the tub or vat in which thepulp is beaten by a new way of opening and closing the valve.

In the drawings, Figure l is a perspective view of the vat with thewasher in place. Fig. 2 shows that side of the valve board or platewhich goes to the side of the vat. Fig. 3 is an edge section of the vat,the plate, and the washer. Fig. 4 is the side of the board or plate thatgoes against the washer. Fig. 5 is an upper edge view of the plate andits slides.

The same letters refer to the same parts in each figure.

The letter A shows the vat or tub; B, the washer; O, the valve board orplate; S, the valve or openings for the discharge of the water. Thejournal a on the shaft b of the washer B at the end next the side of thevat or tub is held in a bearing e, which' is permanently fixed to theupper edgel of the board or plate C, so that when the journal-boxes eare raised bymeans of the racksf, pinions g, and crank h the box on theside next the side of the vat or tub will carry up with it the board orplate C, and so bring the lower portion Za of the plate C over theopening S in the side of the tub A, the pressure of the pulp beingsufficient to make a tight joint between the plate and the tub.

One end of the washer B is closed. The end next the side of the vat isopen and has acircular rim supported by arms. Upon the circular rim fm.there is a projection t', which corresponds with a projection, alsomarked vl, on the valve board or plate O. The projection z on the rim mof the washer B when the washer revolves rubs against the projection ion the board or plate O,and undueleakage at the joint is prevented byplacing a strip of water-tight or other material e, as wide as the twoprojections 'L' put together, around the lower part of the circle t onthe rim m of the washer' and the semicircle t' on the plate, with itsends fast to pins on the upper part of the plate C, as shown in Fig. 4.

Two slides n 'n are made fast to the sides of the vat or tub A, theedges of which are V- shaped, as shown in Fig. 5, or square, as the casemay be, to which the ends of the board O are made to correspond and tit,the pieces n being holders and guides to the plate C on its beinghoisted from or lowered into the pulp in the vat.

Motion to the washer is given from the main shaft w of the beater, asthe case requires provision being' made to allow Ithe washer to rise outof gear when it is lifted by the racks and pinions. i

I do not claim a side discharge of the water, norawasher with one closedand one open end.

I/Vhat I claim is- The combination of the washer B, its journal-box e,and the valve-board C, under a method of construction and operationsubstantially as above described.

JAMES PIERCY. Witnesses:

WM. M. GooDINe, JOHN H. COCKEEAIR.

